Swansea Coroner's Office has told ITV News that further tests will now be carried out on Gareth Colfer-Williams, which are expected to take six to eight weeks.
His family have raised questions about the medical care he received in the days before his death.
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Seven Welsh sites are in the running to be Heathrow logistics hubs which would deliver a number of skilled and semi skilled jobs in Wales.
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Wales are looking for a new manager after Chris Coleman resigned in order to take the vacant job at Sunderland.